MYO-Size Stack

$241.00 - $339.00
Current Stock:


Your choice from the drop down menu located above:

8 week cycle: (SAVE 10%)

- RAD-140 x 2 30ml Bottles

- YK-11 x 2 30ml Bottles

- OR - 

12 Week cycle: (SAVE 16%)

- RAD-140 x 3 30ml Bottles

- YK-11 x 3 30ml Bottles


*All up to date third party tests are located on each products single bottle page*


How it works:

The MYO-Size Stack is an extremely powerful stack for researchers looking to put on massive amounts of muscle within a short period of time. With a 90 to 1 anabolic to androgenic ratio that does not aromatize into estrogen, RAD-140 is perfect for major lean muscle gains and strength gains whilst YK-11 inhibits the production of Myostatin in muscles by attaching itself to the androgen receptor. This induces muscles to create more Follistatin which in turn allows the research subjects muscle to grow beyond normal genetic capability.

How to apply:

Orally apply 1ml of each chemical daily to research subject.

Store in a cool dry place.



The products that US GAINS offer are intended for laboratory research use only. Please read our terms and conditions.

These research chemicals are NOT intended to treat, prevent, cure, or mitigate disease. These chemicals are NOT for human consumption.

*Results may vary*

How to Use+